Luminance Normalization of Optical Sheets in a Backlight Unit for LCD-TVs

Photocrosslinkable liquid prepolymers for flexible waveguide display applications

“…About a 6-8 inch exible lm display is available with these prepolymer lms, considering that a conventional liquid crystal display (LCD) shows a light-use efficiency of 0.07-0.03 depending on optical sheets. 31,48 The optical losses are mainly due to the intrinsic material absorption caused by vibration overtones between carbon and hydrogen or uorine in the chemical structures and a scattering loss generated in a sidewall of the waveguide. 49 The scattering loss can be reduced by optimization of the fabrication process for the waveguide.…”

Correlation Between the Optical Performance of the Reflective Polarizer and the Structure of LCD Backlight

“…Although the operating principle of the multi-layer reflective polarizer has been reported in detail [3], there has been no detailed report on the correlation between the optical performance of the reflective polarizer and the structure of BLU except for our previous study [4]. There are other reports on the optimization of combinations of optical sheets [5] or the quantification of luminance properties on each optical sheet in BLU [6]. The purpose of this paper is to report the quantitative correlation between the on-axis luminance gain by the reflective polarizer and the detailed structure of LCD backlights, such as light sources and the configuration of optical sheets.…”

Study on the Correlation Between the Optical Performance of the Reflective Polarizer and the Structure of the Backlight for Large-size LCD Applications

“…. þ j H ¦µ 1 ÏF g s × ¼(Light Emitting Diode, LED) \ ¦ F g" é ¶Ü ¼ Ð 6 xô Ç LED TV Û ae& h l \ ¦ = å J " f [ j@ / n Û ¼e ¦Y Us \ @ /ô Ç ' ad s & t ¦ e . LED TV H { 9 ì ø Í& h Ü ¼ Ð H TV\ ¦ 1$ í H o è[ þ t ¦ y n C_ " é ¶Ò ò ¦ µ 1 Ïí ß H LED Ð Ë µ 1 ÏF g n Û ¼e ¦Y Us Ð s K ÷ & t ë ß þ j H © 6 x o ) a LED TV H LCD TV_ 7 á xÀ Ó × ae \ 5 Å qô Ç .…”